[  519.114994] bond0: (slave eth0): making interface the new active one
[  519.115084] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.278311] bond0: (slave eth0): Releasing backup interface
[  523.357814] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.508683] bond0: (slave eth0): Releasing backup interface
[  527.542701] bond0 (unregistering): Released all slaves